import tensorflow as tf

v = tf.Variable(initial_value=tf.random_normal(shape=(100, 100)), dtype=tf.float32, name='v')
mean_v = tf.reduce_mean(v)
max_v = tf.reduce_max(v)
min_v = tf.reduce_min(v)

sess = tf.Session()
sess.run(tf.global_variables_initializer())
mean_val, max_val, min_val = sess.run([mean_v, max_v, min_v])
print('mean', mean_val)
print('max', max_val)
print('min', min_val)